From 74e5ae284b1c8ac36a77e57ab9a49178173c666f Mon Sep 17 00:00:00 2001 From: David Gibson Date: Fri, 6 Feb 2015 14:55:53 +1100 Subject: pseries: Export RTC time via QOM On x86, the guest's RTC can be read with QMP, either from the RTC device's "date" property or via the "rtc-time" property on the machine (which is an alias to the former). This is set up in the mc146818rtc driver, and doesn't work on other targets. This patch adds a similar "date" property to the pseries machine's RTAS RTC and adds a compatible alias to the machine. Signed-off-by: David Gibson Signed-off-by: Alexander Graf --- hw/ppc/spapr.c | 3 +++ hw/ppc/spapr_rtc.c | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 6e8248d..b39073b 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1000,6 +1000,9 @@ static void spapr_rtc_create(sPAPREnvironment *spapr) qdev_init_nofail(dev); spapr->rtc = dev; + + object_property_add_alias(qdev_get_machine(), "rtc-time", + OBJECT(spapr->rtc), "date", NULL); } /* Returns whether we want to use VGA or not */ diff --git a/hw/ppc/spapr_rtc.c b/hw/ppc/spapr_rtc.c index 5ad0823..83eb7c1 100644 --- a/hw/ppc/spapr_rtc.c +++ b/hw/ppc/spapr_rtc.c @@ -152,6 +152,11 @@ static void rtas_set_time_of_day(PowerPCCPU *cpu, sPAPREnvironment *spapr, rtas_st(rets, 0, RTAS_OUT_SUCCESS); } +static void spapr_rtc_qom_date(Object *obj, struct tm *current_tm, Error **errp) +{ + spapr_rtc_read(DEVICE(obj), current_tm, NULL); +} + static void spapr_rtc_realize(DeviceState *dev, Error **errp) { sPAPRRTCState *rtc = SPAPR_RTC(dev); @@ -165,6 +170,8 @@ static void spapr_rtc_realize(DeviceState *dev, Error **errp) host_s = mktimegm(&tm); rtc_ns = qemu_clock_get_ns(rtc_clock); rtc->ns_offset = host_s * NSEC_PER_SEC - rtc_ns; + + object_property_add_tm(OBJECT(rtc), "date", spapr_rtc_qom_date, NULL); } static const VMStateDescription vmstate_spapr_rtc = { -- cgit v1.1